Well, this was pretty inevitable, wasn't it? We had Google employees detailing that their company has pretty much given up on Windows, forcing employees to use either Mac OS X or Linux. In what surely comes as a total surprise, Microsoft has responded to this report. Regarding the security claims, "the facts don't support the assertion", Microsoft states.

They should stop trying to improve the image of "Windows". This would have been the best time to drop the boat anchor that is backward-compatibility and come up with a brand new OS with a shiny new name.